计算机图形学——OpenGL学习系列之绘制3D下的小桌子

怼烎@ 2022-06-17 22:40 499阅读 0赞

# 计算机图形学——OpenGL学习系列之绘制3D下的小桌子 #

做的一个小练习，主要用到了几何变换还有gl自带的一个绘制立方体的函数，顺便体会一下glPush和glPop的用法。另外，从2D到3D，开心到飞起![偷笑][titter.gif]明天让他动起来，睡觉![睡觉][sleep.gif]

![20170326222646775][]

#include <gl\glut.h>
    void drawTop(){
    	glPushMatrix();
    	glColor3f(0.25,0.25,0.25);
    	glTranslatef(0, 0, 0.6);
    	glScalef(8, 8, 1);
    	glutSolidCube(0.2);
    	glPopMatrix();
    }
    
    void drawLeg(float x, float y){
    	glPushMatrix();
    	glColor3f(0.75,0.75,0.75);
    	glTranslatef(x, y, 0);
    	glScalef(1, 1, 5);
    	glutSolidCube(0.2);
    	glPopMatrix();
    }
    void drawDesk()
    {
    	glPushMatrix();
    	glRotatef(90, -1.0, 0.0, 0.0);
    	glRotatef(10, -1.0, 0.0, 0.0);
    	glRotatef(30,0,1,0);
    	drawTop();
    	drawLeg(0.5, 0.5);
    	drawLeg(-0.5, 0.5);
    	drawLeg(-0.5, -0.5);
    	drawLeg(0.5, -0.5);
    	glPopMatrix();
    }
    
    void display()
    {
    	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
        glDisable(GL_DEPTH_TEST);
    	glDisable(GL_LIGHTING);
        glMatrixMode(GL_MODELVIEW);
    	drawDesk();
    	glFlush();
    }
    
    int main(int argc, char *argv[]){
        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
        glutInitWindowPosition(100, 100);
        glutInitWindowSize(400, 400);
        glutCreateWindow("MyDesk");
        glutDisplayFunc(&display);
        glutMainLoop();
        return 0;
    }

[titter.gif]: http://static.blog.csdn.net/xheditor/xheditor_emot/default/titter.gif
[sleep.gif]: /images/20220618/582ab920f0fa49b99248aeadf7a9a042.png
[20170326222646775]: /images/20220618/9d1fdf1784b74d1d9048a69b35d67469.png